Dump-car.



(No Model.)

D. SINCLAIR.

DUMP CAB.

(Application filed Dec. 4, 1899.)

Patented lune l2, |900.

2 Sheets-Sheet I.

lmllllll 1 No. 651,428. Patented :une l2, |900.

n.- s|Nc|. A|n. numP cAn.

(Application filed Dec.A 4, 1899.) (No Model.) 2 SheetsL-Sheet 2..

,ff- 1 [zu WflVEEEa I lamr. wmf@ QM PATENT Enron;

DONALD SINCLAIR, 'QF CHICAGO, ILLINOIS.

DUMP-CAR.

srEcrFIcATroN forming pare of Letters meent No. 651,428, dated Jun-e 1e, 1900.

Application filed December 4, 1899. Serial No. 739,212. (No model.)

To all 'whom t may concern.-

Be it known that I, DONALD SINCLAIR, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented a certain new and Improved Dump-Car, of, which the following, taken in connection with the accompanying drawings, is a specification.

My invention has for one object the provision of a dump-car which can be made to carry the load low and yet be dumped with facility and certainty.

Another object of my invention is the provision of an improved form of mechanism for supporting the body of the dump-car, comprising a primary support or frame, a secondary support or strut, and means whereby in dumping the load is shifted from the point at which the primary support is carried in the direction of af ulcrum-point against which the secondary support ab uts when the body of the 'car reaches such a position as to require the elevation of the inner side thereof.

Another object of my invention is the provision of a dump-car which while strong and simple can yet be constructed at a minimum cost.

The above, as well as such other objects as may hereinafter appear, I attain by means of a construction which Ihave illustrated in preferred form in the accompanying drawings, in which- Figure l is an end view of a car embodying my invention. Fig. 2 is a side view thereof. Fig. 3 isa section showing the operating parts with the car in level position, and Fig. 4 is a corresponding section showing the parts in the position which they assume when the load is being dumped.

Above a truck 5 is mounted a car-body 6, the weight of the latter being transmitted to the former by means of a frame or primary support 7, of approximatelya triangular shape, the car-body resting upon the base of the triangle and the whole being carried at or near its apex upon a supporting part or pin 8, fastened to the truck.

Pivoted to the car-body, at one side of the middle part thereof, is a strut 9, provided at one end with a slot 10, engaging a fulcrum pin or part ll, secured to the truck. apex of the primary support or frame 7 there The car-body when' loaded stands :in the position shown in Figs. l, 2,-and 3, the weight p being carried upon the pin 8, which is at the `upper end of the slot 12. The strut 9 is in the position shown in Figs. l and 3, the fulcrumpin l1 being at the lower end of the slot 10.`

In order to permit the car-body to be carriedin as low a position as possible, the pin 8 is made fast to the lowest convenient point upon the truck, and the cross-beam 13 of the truck is beveled oftA on one end, as shown at 14, to permit the car-body to be dumped, although swung in such a low position.

In du mping the car the body is shifted sidewise, the weight continuing to be supported upon the pin 8 until the upper end of the slot l0 strikes the fulcrum-pin 1l, when the load of the car will ,be transmit-ted to the strut 9, carried by the said fulcrum-pin. After this position is reached the highest side of the carbody is raised still farther to the position shown in Fig. et, so as to cause the contents to be freely discharged. Such upward movement of one side of the car-body is permitted by reason of theslot 12, the rotation of the body and load being about the fulcrum-'pin 1l at this time.

From the above it will be seen that the load being carried when the car is in upright position upon the single point or apex ofthe frame it can be supported quite low upon the truck, and when desired to dump the load is shifted over to one side with very little force. After the strut has come to the position in which it will transmit the load to the fulcrum-pin ll the main body of the load has been shifted so far to one side that it requires comparatively very little force to lift the highest side of the car-body still farther into the position shown in Fig. 4, so that the contents of the car will be, as stated, entirely and freely dumped.

While I have shown my improved car in the form in which I prefer to embody it, it is obvious that in many of the details it could be changed Without departing from the spirit of my invention. Where I have referred to a supporting-pin and a fulcrum-pin, I de- ICO sire to be understood as applying the term in a sufficiently-broad sense to cover any equivalent device for performing the functions of the said pins, it being obvious, for example, that instead of slotting the frame the bottom of the frame could be made With a bolt or eye engaging a slot in the supporting part. It is also obvious that it is immaterial Whether the slot in the strut be made at one end or the other.

The essential thing in my construction is that the load shall be, when the car is in level position, supported upon a point from which it can be shifted sidewise a considerable distance without encountering material resistance and that then the load should be transmitted to a point nearer the side of the car, the higher side of the car-body being then capable of still further elevation.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A dump-car comprising a car-body, a truck-frame, a primary support, at the bottom of said truck-frame as described Whereby the car-body is supported in a 10W position with reference to the truck, a secondary support, and means whereby the load of the car is carried first on said primary support and then, when the car is partly dumped,

shifted to said secondary support to permit the elevation of the raised side of the carbody, substantially as described.

2. A dump-car comprising a car-body, a truck-frame, a primary support, a secondary support, a supporting-pin, a fulcrum-pin, and slots in both of said supports whereby in dumping the car the load is turned first about the supporting-pin as a center of rotation, and then shifted to the fulcrnm-pin as a center of rotation, substantially as described. y

3. A dump-car comprising a car-body, a truck-frame, a primary support, a secondary support, a supporting-pin, a fulcrum-pin, said primary support being formed approximately of triangular shape carrying the car-body upon its base and being supported at or near its apex, a slot near the apex of said primary support and a slot in said secondary support whereby, in the dumping of the car, the Weight of the load is rst moved about the said supporting-pin as a center of rotation, and then shifted to said fulcrum-pin, the raised side of the car being thereby further elevated, substantially as described.

DONALD SINCLAIR.

Vi tn esses:

PAUL SYNNEsTvEDT, PAUL CARPENTER. 

